Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1834-1836
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
1831
1990-96
1838
1772 (original); 1919 (model)
1934
1705-1737
1838
1833
1837
1830
2000-100 BCE
1832
4000-2001 BCE
1839
1837
1830
1955; 1830
1836
1870-1877
1863-7
1830
1893-4
c.1837
1830-1835
1837
1830
1835
1832
1835
1833
1860-1920
1938; (1838)
1834
1834
1835
1837
1838
1836-1839
1930 (replica); 1834 (original)
1930 (replica); 1834 (original)
1839
1831
1836-1839
1832
1839